165507325 has 24 divisors (see below), whose sum is σ = 218825280. Its totient is φ = 123744000.

The previous prime is 165507323. The next prime is 165507341. The reversal of 165507325 is 523705561.

It is not a de Polignac number, because 165507325 - 2¹ = 165507323 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165507323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62886 + ... + 65464.

It is an arithmetic number, because the mean of its divisors is an integer number (9117720).

Almost surely, 2^165507325 is an apocalyptic number.

It is an amenable number.

165507325 is a deficient number, since it is larger than the sum of its proper divisors (53317955).

165507325 is a wasteful number, since it uses less digits than its factorization.

165507325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757 (or 2752 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 34.

The square root of 165507325 is about 12864.9650213283. The cubic root of 165507325 is about 549.0422173610.

The spelling of 165507325 in words is "one hundred sixty-five million, five hundred seven thousand, three hundred twenty-five".